Looks like it my be worth a try... Costco has good return policy so if you don't like it I'm sure they would take it back. HMMMM?
From their Website:
The Osia Wakesurfer Pro 5.6 wake surf board package includes everything you need to hit the water and tear up an endless wave. This is a 5’ 6” long versatile board that is equally fun in small or medium size wakes. The short boards inspired shape with added volume give this board plenty of lift and help it float higher on the water. The varied profile rails are narrower from mid body to the nose preventing the nose from catching an outside edge and fuller and sharper through the back third helping the board drive along the wake while releasing water quickly. The squash tail and three fin set up allow riders of all ability levels from beginner to pro to have a great time on this board. Simply adjust the fin setup to match you riding style. Each board is constructed individually starting with a hand shaped virgin PU foam core and poplar stringer. The board is overlaid with S-Glass fiberglass and epoxy resin using a continuous wet wrap lay up process making the board very strong and extremely smooth. Hand sanding and high gloss polish protect the graphics and help make the board fast in the water. The package includes the board, traction pad set and surfboard bag.

The shape of the 5' board looks pretty good. I'm not sure about the fins though.

I really want a new board and I'm all for supporting the industry guys that made the sport. It makes it tough though when I'm looking at boards and they are $400+. I keep waiting on a deal to pop up but haven't seen any for what I want.

Clearly the number one draw for Costco is the low margins and personally, I think there's a place for them in the grand scheme of things. And if your option is no board or what's at Costco, you have to pull the trigger on the Costco board. The stark reality is that local and online retailers can't compete on price with a Costco, it woud be fool-hardy to even try.

But local retailers, which are going to charge more, have a few things to offer.

Selection being one. I'm not a big fan of the wakeboard company boards, but still being able to choose between LF, CWB, HL and Ronix and maybe IS and P5 is at least a 300% increase in selection over the Osia. Online retailers like Towanza offer what 15 different brands? It's a different market segment, that segment that BOUGHT the Osia last year and now wants a different board.

Expertise is another - wanna venture a guess what the answer will be if you're asking your friendly Costco employee if you can change fins? No not a fin like from Finland, a FIN on the board!

NOT being treated like a criminal is another - nothing is as much fun as the yahoo at the door checking your receipt against your purchases! Up against the wall mofo! Online stores are probably going to toss in a T-shirt and I know that my local Pro-Shop hands out little things like stickers to kids. It's just a nicer shopping experience. Some folks don't mind the "did you steal that?" queue, and some prefer a free t-shirt for being a patron.

NOT having to schlup your board the 3.27 miles from the rack in sporting goods to the cash register through the labryinth of aisles (did we go north at housewares?!) and then the next 4.56 miles out to your car. Although that is good exercise. Still local or online retailers don't make your shopping experience a trek through the Andes.

I think the biggest area that local retailers and online stores and the non-chienese imported manufacturers can compete on is that you'll get a board that you won't outgrow that first season. It's probably cheaper to pay the $650 once rather than the $250 AND $650 a little later.

There is ALWAYS going to be competition, if it's not Costco, it'll be Online Retailers vs Brick and Mortar stores, I think you just have to differentiate yourself into a segment of the market that's big enough to support your store. Making the sport more accessible through channels like Costco won't be bad in the long-run for shops, IMO.

Well said Jeff. I 've been thinking more about this myself since I posted and some of the points you brought up were exactly the lines I was on. I'd rather see a sale initially go to costco, knowing that they full well may have just hooked at least one (most likely more than one) individual into the sport. Which translates to more future sales at a shop or online retailer, which supports the industry, albeit later down the line.